2 years ago

Here please please please

1 answer:

8 0

Answer: 6

explanation:
set up proportions
(4+2)/9 = 4/x
6/9 = 4/x
simplify
2/3 = 4/x
cross multiply
2x = 12
divide
x = 6

You might be interested in

Please help, will give brainlist!

Grace [21]

Answer:

Step-by-step explanation:

3 0

2 years ago

Please help! Giving brainliest

lianna [129]

Answer:

5y^2-12y+21-73/2y+3

6 0

2 years ago

What is the remainder for the synthetic division problem below?

Luden [163]

7 |1 -8 10
X. 7. -7
1 -1 3

A remainder is 3

7 0

1 year ago

A research company desires to know the mean consumption of meat per week among people over age 40. A sample of 610 people over a

Papessa [141]

Answer: $(3.0,\ 3.2)$

Step-by-step explanation:

Confidence interval for population mean is given by :-

$\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}$ (1)

, where $\overline{x}$ = Sample mean

$z_{\alpha/2}$ = Critical z-value

$\sigma$ = Population standard deviation.

n= Sample size.

As per given , we have

n= 610

$\sigma=1.1$

$\overline{x}=3.1$

Significance level for 85% confidence : $\alpha=1-0.85=0.15$

By z-table critical two tailed z-value : $z_{\alpha/2}=z_{0.075}=1.44$

Put all values in (1) , we get

$3.1\pm 1.44\dfrac{1.1}{\sqrt{610}}$

$3.1\pm 1.44\dfrac{1.1}{24.698}$

$3.1\pm 0.064$

$=(3.1-0.064,\ 3.1+0.064)=(3.036,\ 3.164)\approx(3.0,\ 3.2)$

Hence, the 85% confidence interval for the mean consumption of meat among people over age 40. = $(3.0,\ 3.2)$

5 0

3 years ago

A pet store sold 145 bags of beef flavored dog food and 263 bags of cheese-flavored dog food. How many bags of dog food were sol

Bingel [31]

Answer:

408 bags of dog foods were sold

Step-by-step explanation:

145 bags of beef flavored dog food

263 bags of cheese flavored dog food

408 bags of dog foods were sold.

8 0

3 years ago